Add sweet potato chunks to a large stockpot and cover with water. Heat over high heat until the water reaches a boil. Reduce heat to medium-high and continue boiling until the potatoes are fork-tender (can mash easily with a fork). Drain, and then return potatoes to the stockpot.

Add in the warmed milk, maple syrup, butter, cinnamon, salt and pepper. Use a potato masher to mash the potatoes, and stir the mixture together until everything is well-combined and the potatoes reach your desired level of smoothness.

Transfer the potato mixture into a baking dish, then top with the maple cinnamon pecan topping.